38 mm replacement piston / piston kit with two pieces of 2 mm rectangular piston rings with flank lock (FS) suitable for the windage-cooled cylinder of Sachs 50/3 & 50/4 mopeds / mopeds with square intake.
The detailed dimensions of the piston according to the technical drawing can be found in the details. You can also find out about the relevant piston rings, their stems and locking types on the legend in the pictures.
The piston kit contains piston pins, piston clips and piston rings.
Corresponding assembly tools, piston rings, piston pin retainers etc. can be found under accessories.
Original Sachs spare part number: 0290 058 025
Details
| Nominal diameter | 38 mm |
| Ø outside piston (A) | 37.94 mm |
| Compression height (C) | 28 mm |
| Curvature (D) | 2.95 mm |
| Total piston height (E) | 53 mm |
| Number of piston rings (F) | 2 pcs |
| Piston ring mold | Rectangular ring |
| Piston ring impact | Flank safety device (FS) |
| Piston ring height | 2 mm |
| Ø piston pin (B) | 12 mm |
| Weight | 73 g |
Suitable for the following models
| Sachs | 50/3 50/4 - MLFB (2.6 PS), LKH (4.5 PS) |
Accessories & related products
38 mm cylinder kit square inlet | Sachs 50/3, 50/4
Area of application: Tuning · Material: Gray cast iron · Surface: sandblasted · Crankshaft stroke: 42 mm · Displacement: 50 ccm · Camouflaged: No · Nominal diameter: 38 mm · Number of fixing points: 4 pcs · Hole spacing inlet: 31 mm · Ø piston pin (B): 12 mm · Thread inlet: M5x0.8 (standard thread) · Hole pattern [mm]: 51 x 40 · Outlet type: Union nut · Thread outlet: M35x2 (standard thread)
EUR 146,40
GPO piston pin extractor Ø 10, 12, 14 mm
Manufacturer: GPO · Material: Steel · Area of application: (Dis)assembly tool · Surface: burnished · Diameter: 10 mm · Diameter: 12 mm · Diameter: 14 mm · Total length: 130 mm · Width across flats SW: 10 mm · Width across flats SW: 17 mm · Number of components: 7 pcs
EUR 22,40
Moped fans like you also bought:
Magura cable clamp Ø 8 x 15 mm
Ø Bundle: 6 mm · Ø Cable bushing: 2.3 mm · Manufacturer: Magura · Material: Brass · Material: Steel · Surface: blue galvanized · Surface: nickel-plated · Thread type: M6x1 (standard thread) · Ø outside: 8 mm · Drive: External hexagon · Drive: Slot · Screw head: Hexagon · Area of application: Standard · Width across flats SW: 7 mm · Thread length: 7 mm · Total length: 15 mm
EUR 2,80
OMG fuel filter metal 6 mm (removable)
Manufacturer: OMG · Ø inside: 3.45 mm · Material: Glass · Material: Metal · Color: gray · Color: transparent · Color: white · Ø outside: 22 mm · Filter type: Plastic net · demountable: Yes · Ø fuel hose connection: 5.6 mm · Ø fuel hose connection: 6 mm · Total length: 40 mm · Total length: 63 mm
EUR 7,60
Magura gas cable clamp / deco cable clamp Ø 5 x 6 mm
Ø Cable bushing: 1.6 mm · Manufacturer: Magura · Number of components: 2 pcs · Material: Brass · Material: Steel · Surface: nickel-plated · Thread type: M4x0.7 (standard thread) · Ø outside: 5 mm · Drive: Slot · Screw head: Lens head · Thread length: 4 mm · Total length: 6 mm
EUR 2,25
GPO ignition plate set 90 mm (Bosch, Ducati Replica)
Manufacturer: GPO · Material: Aluminum · Tension: 6 V · Area of application: Original · Area of application: Standard · Surface: dull · Color: gray · Ø bolt circle: 80 mm · Number of cables: 3 pcs · Ø outside: 90 mm · Cable length: 400 mm · Cable length: 500 mm · Ø inside: 18.5 mm · Number of fixing points: 4 pcs
EUR 84,40
Magura adjusting screw brake short
Ø External head: 9.15 mm · Manufacturer: Magura · Material: Brass · Surface: nickel-plated · Color: silver · Thread type: MF6x0.75 (fine pitch thread) · Total length: 31 mm · Total length: 40 mm · Drive: Knurled screw · Thread length: 15 mm · Ø shaft: 6.1 mm · Shank length: 6.9 mm
EUR 3,85
Hot 
Leonelli 6V voltage regulator (1A quality)
Width: 27 mm · Height: 15 mm · Manufacturer: Leonelli · Material: Aluminum · Material: Plastic · Surface: raw · Tension: 6 V · Type of current: Alternating current (AC) · Performance: 50 W · Ø mounting hole: 6 mm · Mounting type: Screws · Total length: 50 mm
EUR 33,70
Flat nut M21x1 LH clutch | Sachs 50/2, 503 AB/ABL/2AL/2BL (A1504)
Nut type: Hexagon flat nut · Thread type: MF21x1 LH (fine/left-hand thread) · Drive: External hexagon · Width across flats SW: 26 mm · Pony spare part no.: A1504 · Sachs spare part no.: 0242 030 005 · Sachs spare part no.: 0242 030 105
EUR 8,45
Collection only possible with online purchase and appointment.
